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Concrete slabs should be designed to fail under rebar yield as opposed to concrete crushing. So assuming a rebar yielding scenario the first step is to determine the maximum load which can be sustained by the tension rebar as follows,
0.87*Fy gives the failure maximum stress in the steel, which can then be multiplied by the total area of rebar to give the force of the steel in tension. where Fy is the yield strength of the steel. (typical value of Fy is say 500Mpa)
Next it is assumed that the slab is in a state of static equilibrium i.e. not accelerating off in any direction!
For this to happen the force in the concrete must = the force in the steel,
Fst = Fcc = 0.567*Fck*A
Fst = force of the steel in tension (calculated above)
Fcc = force of concrete in compression = maximum sustainable Force of steel in tension
Where Fck = concrete compressive strength,
and A = area of a simplified stress block,
limiting the depth of the stress block to 0.8x results in ;
Fcc = 0.567*Fck*0.8x*B
where x = depth to neutral axis
B = breadth of slab
Rearranging for x gives
X = (Fcc/(0.567*Fck*B))/0.8
What else can I help you with?
How do you calculate slope in physics?
slope=rise/run in other words: slope= y-axis/x-axis
How do you work out width of oval?
To calculate the width of an oval (ellipse), you need to measure its major and minor axes. The major axis is the longest diameter, while the minor axis is the shortest. The width of the oval can be represented by the length of the minor axis, which indicates its width at the widest point perpendicular to the major axis. If you have the semi-minor axis (half of the minor axis), the width can be expressed as 2 times the semi-minor axis length.
How to derive First moment of area for composite beam?
To derive the first moment of area (Q) for a composite beam, first identify the individual components of the beam and their respective areas (A). Calculate the distance from a reference axis (usually the neutral axis) to the centroid of each component (ȳ). The first moment of area for each component is then calculated using the formula ( Q = A \cdot \bar{y} ), where ( \bar{y} ) is the distance from the centroid of the component to the reference axis. Finally, sum the first moments of all components to obtain the total first moment of area for the composite beam.
Where do you look for the scale in the x axis or y axis?
Next to the axis. Next to the axis. Next to the axis. Next to the axis.
Where is y and x axis?
The y- axis in the vertical axis and the x-axis in the horizantal axis
What is the neutral axis of a beam?
The neutral axis of a reinforced concrete beam is the area where the beam is neither in a state of tension or a state of compression. This is determined by having the length and breadth of the beam available.
If the neutral axis of a reinforced section is above the critical section what is the section called?
Under Reinforced Section
What is neutral axis of a beam?
The Neutral Axis of a concrete beam is that axis where it is neither in tension nor compression. The transition of tensile to compressive forces set up due to bending occurs on the neutral axis. Its position in a beam depends on material properties of the concrete and reinforcing steel.
How do you calculate neutral axis of a wooden beam?
In order to compute the neutral axis of a beam, we need its dimension and shape.
How to calculate Q first moment of inertia above and below the neutral axis?
-find the area(A) of the shape above the neutral axis (or above a particular point if given) - locate the centroid (y')of the shape relative to the neutral axis(or above point) using y' = ∑AiYi / ∑Ai - first moment of area = A*y' (or y' + distance of given point from neutral axis)
Which neutral country was surrounded by axis conquest and axis countries?
Switzerland
Was Mongolia allies or axis?
No. It was actually a neutral country.It actually remained neutral.
Assumptions of ultimate load method?
1. Plane sections normal to axis remain plane after bending. This implies that strain is proportional to the distance from neutral axis. 2. Maximum strain in concrete of compression zone at failure is 0.0035 in bending 3. Tensile strength of concrete is ignored. 4. The stress-strain curve for the concrete in compression may be assumed to be rectangle, trapezium, parabola or any other shape which results in prediction of strength in substantial agreement with test results.
Was the Holy See an Axis or Allied country?
The Vatican was neutral.
What is magnetic neutral axis in dc machines?
connects the brushes to obtain a good commutation. its also a line joining two points at which no emf is induced.
What was a neutral nation in World War 2?
Neutral nations included countries that did not fight on either side. In Europe, Switzerland was neutral. Spain was ostensibly neutral but aided the Axis (Germany). Ireland was neutral, its shipping being interdicted by both the Allies and Axis, but in many cases the Irish acted in concert with the Allies, as their own sovereignty was at risk. The Vatican was neutral and was occupied by neither side.
Who were the enemys in World War 2?
The war consisted of 3 sides axis,allies,and countries that were neutral(about 5 or less) the axis powers had Germany,Italy,japan,France and china which were both forced into the axis powers while the allies had America and the rest of the world(except the neutral countries.
